Similarly, although tracheal multicilia also contain the CPF (Zhao et al., 2021), neither the previous Azi1Gt/Gt (Hall et al., 2013) nor our Cep131−/− mice displayed obvious ciliopathy-related symptoms in the respiratory system (Fliegauf et al., 2007; Lucas et al., 2020). The gene discussed is CEP131; the disease is ciliopathy.